摘要
本文分析了预编码算法现状,提出了SINR功率分配方式,它在整个预编码中计算复杂度相对于注水原理是比较低的。研究了它在一种算法中的应用,该算法通过SVD奇异值分解得到预编码矩阵,用SINR来实现功率分配。由于避免了注水原理的迭代运算,因此功率分配计算复杂度有所降低。与此同时,系统和容量与误码率相对于传统平均功率分配方式都有了明显的提升。
A type of power allocation method called SINR is put forward,which has lower computation complexity in the precoding relative to the water-filling power allocation. The current situation of precoding algorithm is also analysed. An algorithm,which uses SVD singular value decomposition to get precoding matrix,with SINR to achieve total power allocation is studied. Without iterative operation,computation complexity is reduced as a consequence. Moreover,both of system capacity and error rate are promoted obviously relative to traditional average power aallocation scheme.
出处
《激光杂志》
北大核心
2015年第9期134-137,共4页
Laser Journal
基金
新疆自治区自然科学基金项目(2012211A013)
关键词
功率分配
计算复杂度
多输入多输出
块对角化
奇异值分解
Power Allocation
Computationa
Complexity
Multiple Input Multiple Output
Block Diagonalization
Singular Value Decomposition
